This precision sharpener is a favorite for technicians, engineers, architects, artists – for anybody who wants a long precise pencil point. The separate sharpening of wood and lead leads to improved performance: crisper lines for longer periods of time, and fewer pencil shavings. The Automatic Stop controls the long, fine points and avoids unnecessary waste.This precision sharpener is a favorite for technicians, engineers, architects, artists – for anybody who wants a long precise pencil point. The separate sharpening of wood and lead leads to improved performance: crisper lines for longer periods of time, and fewer pencil shavings. The Automatic Stop controls the long, fine points and avoids unnecessary waste.